Good advice, Shannon, and I appreciate it. Curiously, in one day since my posting I received exactly the information and support you mention in your reply: a dog sitting service, a neighbor who has offered to let the dog out during the day, and a pack-back for the dog to wear while on walks. The outdoor run was something we considered as well, and may co-exist with the other two options.
I guess I just needed a good night of rest to clear my head and put more effort into the dilema.